I machine for drying veneers



(No Model.)

E. DBNSMORE.

' MACHINE FOR DRYING VENEERS. {No.347,33o. Paten-xsd Aug. 17, 1886.

N. PETERS. Phofo-Lilhognpher. Wahilflnn. D C` ,M j l UiNITED "STATES lPATENT OFFICE.

EDWIN DnNsMoRn, `on GRAND RAPIDS,` MICHIGAN.

MACHINE FOR DRYING VENEERS.

SPECiIFICAlION forming part of Letters Patent No. 347,330, dated August 17, 1886.

n, it concern/ Be itl kno n, that l, EDWIN DENsMoRE, of Grand Rapi ds, inl the county of Kent and State of Michigan, `have invented a new and useful Impr'bveme 't in Apparatus for Drying Veneers; an d I do hereby declare that the fol lowingis a full, clealr, and exact description of the same.

My invention is an improvement upon an apparatus f or drying veneers and other thin material req uiring like treatment.

To all i who.

The improvement relates,rst, to the hollow steam-beate d'rollers, and is for the purpose of keeping?V the m free from water of condensation; second, Ito the mechanism for adjusting the pairs of ,roll ers in their relation to each other, whereby all thepair's may be simultaneously and equally separated or brought together to adapt them the veneer orother sheet which is to be passed between vlthe n1.

In the` ac Jompanyling drawings, Figure 1 represents in end view of the apparatus, showing on pair of rollers in side elevation. Fig. 2repref ents a side elevation of the apparatus. Fig. 3 shows the adjustingdevices for the rolle: 1s. Fig. 4 shows (in larger view) a roller in centrallongitudinal section.

The hollor rollers G Q are adapted to perform the fu 4Ictions of full rolls and dryingdrums. They are mounted in suitable bearings on tubu`I ar journals' 10, in pairs, one of each pair bfingabove the other, and the pairs near each otiher in the same horizontal plane. The lower rollers are provided each with a worm-gear, iff, which meshes with a screw, H, and the same motion is transmittedto the upper rolls by tog-wheelslD D. As usual, steam is passed to lthe rollersrI through pipes nA, having upperlay d lower Ihranches, 1 and 2, with stop-cocks E and F, saifd pipes being connected to the tuloul r` journals by suitable stuffingboxes, which allow the journals to turn over the pipes. Like stufIing-boxes on the other ends connec branches 4, having cocks 5 and 7, with the exhaustpipe 8.

I have; improved ythe construction of the rollers or drums of the abovefdescribed apparatus as illustrated in Fig: 4.

The body of the ,roller is made of gas orA other pipe, of suitable diameter and length.

to the greater or less thickness of,`

i Application filedl January 13, 1886. Serial No. 188,465. (No model.)

It is provided with heads 12 and 15, to which the pipe ends are welded. The journal of the head 12 is bored directly through to the interior, the bore 21 communicating with the branch pipe. The loore 1l of the other head, 15, terminates below the inner surface, and communicates with a lateral passage,13,in the head, which passage opens to the interior near the side. The passage 11 communicates with the discharge or exhaust pipe. The same construction is applied to all the rollers.

In the operation of the machine the steam (generally superheated) passes through the discharge-pipe without obstruction by the water of condensation, except when the opening of the passage 13 to the interior is at the lowest point of its revolution. Then if ythere be any water in the roller it obstructs the mouth of the opening 13, and is forced out of the discharge-pipe by the steam-pressure within the roller. This occurs at every revolution as long as there is water-to any considerable amount within the rollerand thus the rollers are kept clear and radiation of heat permitted on all sides.

The journals of the upper roller of each' pair rest on movable Abearings d, and `those'of the lower on xed bearings g. Afollower, c, rests on the upper bearing, and is pressed down by an'adjustingscrew, a, and spring b. Ablock, f, also rests on the bearing g, forming the upper halt` of the bearing. This has a horizontal upper face, and on its sides a wedge-blocl, e, the upper inclined face of which bears against Dthe reverselyinclined lower face ofthe bearing d. The same construction is for all the journals and bearings, and the blocks e on each side are all connected by rods, of which that at the end (markedli) is threaded and passes through ears, between which is a nut, J, for adjusting the blocks, and thus raising the upper bearings and rollers, or lowering the same underppressure of the springs. Thus the distance between the upper and lowerrollers of each pair may be determined accurately by turning a nut, J, on

. each side.

It will be understood that the strip of veneer or other material is entered at one end between the rollers of the first pair, and is carried on and dried as it is moved.

IOO

ljolaim as my invention- In testimony whereof I' have signed my 1n a steam-drying machine, :L series of pairs name to this specification in thepre sence of two of rollers having movable upper bearings subscribing Witnesses.

and Wedge-bloeks interposed between the up- EDVIN DE'SMORE. 5 per and lower bearings, said wedge-blocks be- Vitnesses: f

ing connected toeach other ou each side, all F. L. Mi'DDLEToN, i

substantially as described. Gillis. L. ST URTEVANT. I l

I; l g 

